ipcc: Fix errno returned from qb_ipcc_connect

The errno value from qb_ipcc_connect was incorrectly negated
when I introduced qb_ipcc_async_connect()

lib/ipcc.c

@@ -152,7 +152,7 @@ int qb_ipcc_connect_continue(struct qb_ipcc_connection * c)
 	free(c->receive_buf);
 	free(c);
 	errno = -res;
-	return -res;
+	return res;
 
 }